Buy mobile hard disk box techniques

Buy mobile hard disk box techniques

Purchase of mobile hard disk technique
Mobile hard disk box material is often overlooked when people are buying the place, the current speed drive also brought thermal issues, if you choose poorly, then the hard disk box cooling, the stable operation of the hard disk will be great the impact. The current market price is generally low mobile hard disk box is a plastic material, less heat dissipation, in a short time may be no problem, if for a long time data exchange, then the machine can appear stagnant, data corruption, crashes and other issues . At present, informal vendors actually use the mobile hard disk box and some aluminum-magnesium alloy as the material is even, although this part of the price higher, but a good cooling measures, will allow you to work hard is more stable.

Hard disk can be regarded as computer accessories, the most expensive part of Jiao, static and vibration is the two killers. Therefore, as a mobile database for mobile hard disk, the shock is the most important issue. If there is no other shock devices designed to buffer, if accidentally or otherwise crash landing will often lead to data loss will have a serious point of physical bad sectors, and even lead to damage hard disk completely, so I chose to pay attention to its removable disk cartridge is to provide seismic protection .

Also consider the box is supported by the operating system hard disk problems, what operating system it can be without having to install drivers for which you need to install. While often an ordinary PC and MAC for data exchange between friends, it is best to choose a compatible PC and MAC of the product.

In the purchase of mobile hard disk box, when should also pay attention to what the market has a lot of fake hard disk box for sale, they are brand name brand manufacturers such as IBM's hard disk box some time ago for the counterfeit products all the events. In addition, according to my understanding, there are some fake Toshiba, Sony and other brands of hard disk box appeared on the market. We need to look at when buying attention, do not be deceived by these manufacturers brands. In fact, these brand-name manufacturers are not going to produce a small hard drive box.

Finally on price, and now the 2.5-inch hard disk box price is relatively low, generally between 80-200 dollars, the price range of hard disk box, simple structure, small size, is a function of choice for the average user less demanding, but lower-priced products because of a relatively simple processing circuit, the transmission performance with a little more expensive products have a certain gap, suggest that you buy time to consider this point, not all of the USB2.0 interface transfer rate are the same. Transfer rate from the internal HDD on the motherboard chip to determine the transmission speed.

In the selection of the chip, can be seen on the market for mobile hard disk box uses the basic support USB2.0 interface chip has the following: high-end ISD300 Chip (In-System company this chip is generally used in the original hard drive prices higher box), cost and reputation are good ALi M5621 chipset (ALi Corporation), stable prices are also relatively inexpensive chip GL811 (Genesys Logic Inc.), and NEC products. Typically, some mid-range mobile hard disk box are used ALi M5621 chipset, good performance, compatibility, Ye Hao.

I decide my hard drive assembly ---- Hard Drive Buying Guide

I decide my hard drive assembly ---- Hard Drive Buying Guide

As a high-capacity mobile hard disk data storage exchange tools, more and more attention by the market, and with the hard drive prices way down, move the hard drive began as the old Former Yan Wang Xietang, flying into the homes of ordinary people.

Now available in the market for mobile hard disk is divided into two categories: original mobile hard disk and removable hard disk assembly. Original mobile hard disk brands are Lvzhi Xing, Buslink, Samsung, BenQ, Seagate, Newman, Patriot, etc., they have focused on the function and appearance, consumers can choose their own preferences. Assembly of mobile hard disk market is relatively confusion, good and bad. In fact, the composition of mobile hard disk assembly is not complicated, mainly by the removable disk cartridge and built-in hard drive form. Professional eye for a ride, pros and cons of established contractors, but the average consumer can only judge based on their subjective, inevitably the natural discrepancies., The following is me as "come" to the consumer to buy some suggestions for reference only:

1 "heart" of the choice

According to the price structure of mobile hard disk, the most important parts of hard disk or hard disk box, hard fundamentally determines the quality of mobile hard disk. But as consumers, it is difficult to accurately measure the level of a hard disk. To the mainstream 2.5-inch notebook hard drive, for example, there are now brand Hitachi, Samsung, Seagate, Western Digital, Fujitsu and so on. Basic parameters of Youyi 5400 8M or 2M majority, and probably almost the same quality of these brands, consumers and more from a professional web site, forum, more understanding. But nowadays the mainstream brands of mobile hard drives, Hitachi and Samsung notebook hard drive seems to be more, mainly because of its superior stability relative to other brands.

Because of its lucrative notebook hard drive, so production, marketing companies and even the public, inevitably mixed. Parallel, disassemble goods in the market are not uncommon, and as manufacturers of the genuine method of identification without much publicity, consumers purchased process is very easily deceived.

2 Interface

HDD Enclosure External interface methods are mainly parallel interface, IEEE1394, USB three.

Parallel Interface HDD Enclosure appeared earlier, due to its low data rate and does not support Plug and Play has been eliminated.

IEEE1394, also known as FireWire, is the Apple standard interface. The theoretical data transfer speeds up to 400Mbps, and supports hot-swapping. However, only some high-end PC motherboard was equipped with an IEEE1394 interface, so the popularity of the poor.Recommended to use with special needs friends.

USB interface HDD Enclosure is the mainstream interface, support hot swap. There are two standard USB, USB1.0. And USB2.0. USB2.0 transfer rate up to 480Mbps, 40 times the interface is USB1.1, USB2.0 needs motherboard support, backwards compatible with 1.1.However, because some time ago many businesses in the high speed 2.0 on playing with words, when consumers choose to pay attention to the standard 2.0 interface should be full speed USB2.0. Now appearing on the market a lot of USB2.0 + IEEE1394 dual interface mobile hard disk box, the configuration is more flexible, but the price is relatively high.

3 Power

2.5 inch USB HDD work, hard drives and data interface from the computer USB interface. USB interface provides 0.5A current, while notebook computer hard drives and operating current of 0.7 ~ 1A, normal copy of the data no problem. However, if larger capacity hard drive or move large files are prone to insufficient power supply, and if the USB interface to multiple USB devices at the same time also prone to power supply shortage, resulting in data loss or hard drive damage. Now most of the market to adopt the USB Y-cable line, one more for the auxiliary power supply. Can solve the problem of insufficient power supply.

3 shell material

Mobile hard disk box material is often overlooked when people are buying the place. Current speed and previously hard to improve, but also brought the heat issue, if you choose poorly, then the hard disk box cooling, the stable operation of the hard disk will have a big impact. The current market price is generally low mobile hard disk box is a plastic material, less heat dissipation, in a short time may be no problem, if for a long time data exchange, then the machine can appear stagnant, data corruption, crashes and other issues . At present, informal vendors actually use the mobile hard disk box and some aluminum-magnesium alloy as the material is even, although this part of the price higher, but a good cooling measures, will allow you to work hard is more stable.

4 speed transmission

Usually 2.5 inches brand mobile hard disk read and write speed from the hard drive, read and write control chip, USB ports, type the three key factors. Current mainstream 2.5 inches brand mobile hard disk read speed of about 15-25MB / s, write speed is about 8-15MB / s. If we are to 10MB / s write speed of copying a 4GB DVD movies to mobile hard disk, to be time-consuming about 6 minutes and 40 seconds; if 20MB / s read speed from a 4GB removable hard disk copy of DVD movie to hard disk, then the host computer, it takes time about 3 minutes and 20 seconds. Note that when consumers can purchase a file transfer site requires businesses to test, or have a special, such as HDTach, HDTune test software on the mobile hard drive for professional testing.

Five key points to keep in mind to buy the mobile hard disk Raiders

Five key points to keep in mind to buy the mobile hard disk Raiders

1, the mobile hard drive enclosure:

HDD enclosure material is generally divided into two kinds of metal and plastic. In general, the metal shell of the compressive strength and thermal performance would be better, and the plastic housing in the earthquake and the relative weight of some better.

2, PCB circuit board control chip:

HDD PCB above the control chip is directly related to the product of reading and writing performance and stability. Current control chip is divided into high and low grades.

High-end controller chip is represented by the United States Cypress Cypress ISD300A1/CY7C68300B/CY7C68300C, Japan NEC μPD720133, Wang Jiu PL-3507. The chip features are: expensive, reliability and compatibility are very good, high-end users the choice.

Low-end control chip is represented by the Yasukuni AU6390, ALi ALi M5642, Genesys Logic GL811 series. The chip features are: the relative stability and data transfer performance to be worse, but enough to cope with the daily demands of work, because of its low cost, multi-application in the low-end hard disk box.

3, HDD external interface:

The current mainstream mobile hard drive interface is the high-speed USB2.0, its transfer rate can reach 480Mbps (60MB / s). To see the IEEE1394 high-end products, or eSATA interface, 1394 interface is divided 1394a and 1394b two. 1394a interface data transfer rate theoretically can reach 400Mbps (50MB / s); 1394b interface, is able to reach 800Mbps (100MB / s). In theory can reach eSATA 3Gb / s, the future development direction of mobile hard disk interface.

4, the HDD power supply:

Mobile hard disk if insufficient power supply, will lead to less hard to find, data transmission errors, or even the internal hard disk is damaged. Mainly caused by insufficient power supply motherboard USB port power supply does not meet the standard value, or using a high-energy control chip. In view of this situation, many HDD manufacturers to design a "two-headed USB-powered" data line, use two USB ports on the mobile hard drive power supply.

5, notebook hard drive:

Mobile hard disk notebook hard drive is the most important part of the mainstream specification for the 2.5-inch, 3.5-inch desktop hard earlier due to size restrictions have been out of the mainstream ranks. Currently, Seagate, Western Digital, Hitachi, Samsung, Fujitsu hard drive manufacturers have produced the appropriate product choice for users. The main technical parameters of notebook hard drives are speed, cache size and product volume. I suggest that in general the user to select 5,400 rpm, 8MB cache hard drive, brand and capacity according to their needs.

Edit Summary:

After more than five key points in understanding, I believe many of my friends have had a mobile hard drive about understanding. Currently on the market for mobile hard disk box brands many types, the quality varies greatly, consumers, do not only attach importance to appearance and price, more details from the product quality and to start at the same time not to be "biting off more than big" purchase psychology, good enough. Finally, I wish you can buy a pre-holiday for their own mobile hard drive, power their e-era life.

 

Selection and use of mobile hard disk technique

Selection and use of mobile hard disk technique

Drive is exchanged between computers in the middle of a large-capacity data storage, usually in the choice of mobile hard disk, consideration is nothing more than the capacity, interface properties, size and additional features, of course, price. The following more specific about when selecting HDD considerations:

1. Capacity. On the market for mobile hard disk capacity is generally in the 40GB ~ ​​120GB range, from the use of nature to see, 40GB ~ ​​120GB is enough, because just as a transitional removable hard disk storage media, there is no need to use much capacity. However, due to hard drive capacity and the price is not proportional to the mass tend to have higher cost, but lower than the 40GB hard drive is already eliminated most of the products, it is recommended to buy a new mobile hard disk to select more than 40GB, but if the purchase of hard disk box back to its assembly it is another matter.

2. Size. Mobile hard disk drives and disk cartridge from the composition, which includes the interface and control circuit. There are usually two removable hard disk size: 2.5 inches and 3.5 inches, corresponding to notebook and desktop computer hard drive. 2.5-inch size and weight of smaller, more portable, but the price is more expensive than the 3.5-inch drives. Generally recommended to select 2.5-inch drive.

3. The interface. Mobile hard drives are generally used USB interface (IDE interface, and there have been earlier, but inconvenient to use, connection to open the case), but pay attention to the USB interface with USB1.1 and USB2.0 two specifications, which is faster than data transferthe former is several hundred times faster, and the computer's internal hard drive is basically the exchange of data at the same rate, but the price is slightly more expensive. Should be the preferred selection of mobile hard disk USB2.0 interface.

4. Purchase products or DIY. Mobile hard disk can be used directly to buy products, but can also be purchased in the computer market right HDD Enclosure (without hard drive which contains the appropriate USB driver circuit and interface circuit, USB adapter cable and external power supply), then with 2.5-inch notebook hard drive DIY their own after a USB hard drive. HDD Enclosure prices about 50 to 150 yuan, accompanied by the old laptop disassemble hard drive (1GB ~ 4GB prices in the 100 ~ 300 yuan) prices in the mobile hard disk 200 to 400 yuan on it.

The time of purchase to pay attention to the size of mobile hard disk box is also the difference between and interface specifications, refer to the instructions above. I own the mobile hard disk is to use a 2.5-inch USB2.0 HDD Enclosure plus a 40GB hard drive second-hand laptop DIY made, the total price but $ 600. Installation is very simple, just plug the interface and hard drive for good on it.

5. The attention of the use of mobile hard disk problems.

(1) mobile hard disk Connection: Mobile hard disk USB cable is the data transmission lines, power lines is hard work, the connection is too long will lead to increased resistance and data interference, the mobile hard disk does not work, so pay attention to : USB transfer cable as short as possible, in addition to the original configuration of the cable, the connection should not extend the line; the second is connected to the computer chassis behind should choose the USB interface (fixed directly on the motherboard interface), while the front of the chassis should not be used interface (which is connected to the motherboard through a wire the front panel).

(2) mobile hard drive external power supply: mobile hard disk drives and data interface work power supply is provided by the computer's USB port. However, using more than 10GB mobile hard disk, simply rely on the hard drive USB cable power supply may be insufficient due to a malfunction, this time we must use an external auxiliary power supply (DC power supply). But now on the market for mobile hard disk power consumption are relatively small, with a USB cable are dual-excuse-powered, so usually you can just plug the USB cable!

3) Although the use of mobile hard disk USB interface, support hot swap, but note that in the course (Windows Me/2000/XP system) must be sure to turn off the USB interface to unplug the USB connection (USB mouse to click the date next to the Interface flags, shut down the interface), or in a high-speed operation of a power outage may cause hard disk damage

2.5-inch mobile hard disk box purchase

2.5-inch mobile hard disk box purchase

HDD Enclosure Power

Power on the hard disk box, which is mainly aimed to select the USB interface HDD Enclosure friends. As the USB port of the maximum supply current of 500 mA, at some point, can not meet some of the 2.5-inch hard job requirements. If long-term drive to work at less than the rated current, then it is easy to make mistakes or even damaged. Its performance is often lost hard disk data format can not be completed when the display error, and on some computers (especially laptops) can not be used.

If so, you can choose to use an external power supply box or purchase a hard drive USB-PS2 interface, take the wire to solve, but some cold hard box with built-in power supply design, which can avoid the additional trouble of carrying an external transformer . If you are using an old laptop hard drive, but also pay attention to this problem, early models of notebook hard drive power consumption is often high, the use of current of 700 mA to 1200 mA are.

Mobile hard disk box material

Mobile hard disk box material is often overlooked when people are buying the place. Here we are talking about the materials used does not mean the shape of removable disk cartridge is design, whether to adopt the color covers, etc., but they use the material.

Current speed drive faster and faster, it also brings the heat dissipation problem. If you choose poor cooling capacity hard disk box, then the stable operation of the hard disk will have a big impact. Currently available low-cost removable disk cartridge commonly used plastic shell, the heat is less effective. Perhaps in a short time may be no problem for a long time if the exchange of information, then it may be stalled data transfer, data corruption, crashes and other problems.Currently the regular manufacturers of high quality mobile hard disk box, mostly using aluminum, and some even use aluminum-magnesium alloy as the shell material. Although this part of the price higher, but a good heat dissipation measures will allow you to work hard is more stable.

The shock of HDD Enclosure

Computer hard drives can be regarded as the most delicate part of the accessories, static and vibration are the two major killers. For as a "mobile database" mobile hard disk, the shock is the most important issue. If you do not design such as shock mounts buffer, once accidentally crash landing or otherwise, will often lead to data loss, will have a serious point of physical bad sectors, and even lead to damage hard disk completely, so I chose to pay attention to its removable disk cartridge is to provide seismic protection function.

HDD Enclosure Design

A removable disk cartridge is easy to use, the design is the key. In general, most of the mobile hard disk box has the following design:

Vents: If the shell is not a removable disk cartridge a good conductor of heat, the cooling holes should be around to help drive cooling. But for the 2.5-inch drives, because of their heat better than the control, this does not need to worry too much. And the hole too much, people will feel they are easier to attract dust.

Non-slip design: the mobile hard disk box housing designed non-slip pattern, or install non-slip plastic mat, etc., in order to increase friction between the shell and prevent HDD accidentally from the hand off.

Which One is Better, Internal Hard Disk Drive and External Hard Disk Drive

Which One is Better, Internal Hard Disk Drive and External Hard Disk Drive

I am routinely receiving mails from my buddies asking that is operating on exterior difficult drives is slower than inner difficult drives? And my response is "yes". really what requires area that inner difficult drives operates on SATA cable TV set which offers 6.0Gbits/s shift demand even although exterior difficult drives are attached by applying USB 2.0 which 480Megabits/s shift rate. So that's why inner difficult drives are slower than exterior difficult drives.

There are countless types of exterior hard disk drives readily available from the market. And should you are going to purchase one of the selected exterior difficult generate 1TB then I will advise you for that Iomega Prestige one TB. That is really an extremely beneficial difficult disk generate in conditions of quality, price, storage space ability and performance.

We have to evaluate in detail concerning the explanation using the Iomega Prestige one TB.

Quality product

the preliminary attribute using the merchandise is this that it offers you one of the selected high qualities at affordable prices. It is really an extremely affordable and straightforward to take advantage of external hard disk drives readily available from the industry for all of your storage space needs. That is really an exceptional one to purpose at reduced consuming energy with higher functionality.

 

Stylish structure

Packed in aluminum circumstance getting a brushed-metal accomplish offers it a trendy and appreciably better looking. This not merely offers attraction however it also facilitates in preserving the unit cooler and quieter. A stand is offered with this unit to area it horizontally or vertically when you wish.

Storage capacity

the key element we see from the exterior difficult generate Mac is its storage space capacity. Iomega Prestige offers you the one TB storage space capacity. This could provide you the USB 2.0 individual interface by which you can store millions of photos, movies, tracks etc. this could purpose properly on house windows Vista, house windows XP Home, house windows XP specialized or house windows 2000 Professional, as well as a Pentium II course processor with 256MB RAM as well as a USB 2.0 connection.

 

Back up facility

the merchandise offers you the option of Backup facility. That is in case, if in potential the information is corrupted accidentally than you can work this operation and recover your lost data. EMC's Retrospect connect computer software is been involved on this unit which permits you an exceptional straightforward facility for backup.

By the above discussion I am optimistic this are going to be obvious for you concerning the brand new exterior difficult generate – Iomega Prestige 1TB. This could not merely provide you beneficial storage space ability but an exceptional pace to shift your information from PC to drive. The exceptional pace of 7200 RPM spindle pace facilitates you in saving time and energy.

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What You Need to Know While Buying a Hard Disk Drive

What You Need to Know While Buying a Hard Disk Drive

Hard disk drives have grown to be an indispensable aspect of every single and each pc nowadays. It holds all of your data, the working system, gives digital memory space to discharge burden away in the RAM and great deal more!

We have are available a prolonged way given that the times of Floppy disks and today, HDD possess the capability to shop terabytes of details on them. Plus they are all inexpensive too! Difficult disk drives are usually referred to as "Data Center" of PCs.
The two primary types of HDD around the market place – SATA (serial ATA) and SCSI (Small pc technique Interface)

 

Some aspects to become thought to be whilst purchasing a HDD:

Form Factor:

Just such as the type element for motherboard, HDD type element is fundamental to assure that it fits correctly into your case. Ensure you verify the sizing of your HDD as nicely as the slot in which it fits within your PC or laptops.

UDMA rate rating:

UDMA rate refers towards the highest rate of information swap in between your technique memory space as nicely as the difficult disk generate buffer. All you must do would be to verify your motherboard's highest information exchange rate after which discover a HDD whose rate rating suits it.

 

Buffer:

This area in the HDD is utilized being a higher rate memory space reserve region which temporarily holds little quantity of information whilst it is waiting to become study from or composed towards the drive. Generally, 8MB should really suffice.

HDD platter speeds (measured in RPM):

This is one more efficiency associated parameter. Difficult disk drives these days operate at higher RPM. Typical speeds of 5400 and 7200 RPM are available. Increased RPM translates to increased efficiency and quicker information transfer. There are even 10,000 RPM HDDs accessible out there!

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